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construccion de albercas

 



gastonzayas
Usuario Nuevo

Jun 9, 2009, 5:29 PM

Mensaje #1 de 2 (3564 visitas)
Link
construccion de albercas Responder Citando El Mensaje | Responder

hola jovenes gracis de antemeno por la hayuda ya que muchos en los construccion nos topamos con problemas o contrucciones que no podemos resolber solos y de esta manera uno puede sentirce un poco mejor con el apoyo de otras personas.


lo que yo ocupo es como se construye una alberca de inicio a fin mas bien los preparativos iniciales del sistema hidraulico


gracias.Wink


robertsanchez
Usuario Regular


Jun 13, 2009, 10:31 PM

Mensaje #2 de 2 (3498 visitas)
Link
Re: [gastonzayas] construccion de albercas [En respuesta a ] Responder Citando El Mensaje | Responder

Ministry of Ministère des
Municipal Affairs Affaires municipales
and Housing et du Logement
PUBLIC POOL
DESIGN, PLAN REVIEW & INSPECTION
CHECKLIST
This checklist is prepared for purposes of convenience only. For accurate reference recourse should be had to the Official Volumes.
Pages Pool-1 to Pool-10 of this checklist may be reproduced.
Pool-2
PUBLIC POOL DESIGN CHECKLIST
BASED ON ONTARIO REGULATION 403/97
SECTION 3.11.
File#: _________________________
Initial review by: ____________________________________________________ Date: _________________________
Final review by: _____________________________________________________ Date: _________________________
Final inspection by: __________________________________________________ Date: _________________________
Class A ‘ or Class B ‘ Indoor ‘ or Outdoor ‘
Major Occupancy: _________________________________________________________________________________________
Pool is required to be designed by an Engineer/Architect? Yes ‘ No ‘
Applicable exceptions: _____________________________________________________________________________________
Project
Name:
Address:
Owner
Name: Phone: ( )
Address:
Agent
Name: Phone: ( )
Address:
Health Unit
Name: Phone: ( )
Address:
C.B.O.
Name: Phone: ( )
Address:
Note: Page 3 to 7 for all pools Additional Pages: Page 8 û Diving Boards and Platforms
Page 9 û Modified & Wave Action Pools
Page 10 û Pools with Ramps
m also applicable for modified pools (see page pool 9)
w also applicable for wave action pools (see page pool 9)
Pool-3
DECK AND POOL REQUIREMENTS
OBC
Reference Requirements Design As Built
3.11.3.1.(4) Except for a modified pool, wave action pool, a pool for therapeutic use, a
beach entry ramp and a pool described in 3.11.5.1. (1).
All water depths $ 0.75 m (2' 6") ‘ ‘
3.11.3.1.(5) Beach entry ramp is protected with permanent barriers between 900 m to 1 200
m along the deck
‘ ‘
3.11.3.1.(6) Bottom slopes
(a) water depths # 1.35 m (4' 5") - maximum 8%
(b) water depths > 1.35 m (4' 5") but < 2.00 m (6' 7") - maximum 33%
(c) water depths $ 2.00 m (6' 7") - maximum 50%
&#145;&#145;&#145;
&#145;&#145;&#145;
3.11.3.1.(7) Recessed fittings for safety buoy line $ 300 mm (11¾") toward the shallow end
measured from the top of a slope steeper than 8% &#145; &#145;
3.11.3.1.(8) Walls vertical to within 150 mm (5f") of the bottom in water depth < 1.35 m
(4' 5") &#145; &#145;
3.11.3.1.(9) Pool surrounded by hard surfaced deck
(a) $ 1.80 m (5' 11") wide
0.90 m (2' 11") clear behind diving board or at a column
(b) outdoor pools - sloped away to waste drains or
adjacent lower ground at a slope of between 2% and 4%
(c) indoor pools - impervious and
sloped away between 1% and 4% to waste drains
&#145;&#145;
&#145;&#145;&#145;
&#145;&#145;
&#145;&#145;&#145;
3.11.3.1.(10)mw Where provided, a ledge shall
(a) be located only where water depth $ 1.35 m (4' 5")
(b) be # 200 mm (7f") wide
(c) be $ 1.00 m (3' 3") below the water surface
(d) be gradually tapered towards shallow end
(e) have a band of contrasting colour on top edge
&#145;&#145;&#145;&#145;&#145;
&#145;&#145;&#145;&#145;&#145;
3.11.3.1.(11)mw Above ground pool - (see page Pool - 4) &#145; &#145;
3.11.3.1.(12) Deck perpendicular to pool walls or projects # 50 mm (2") over water &#145; &#145;
3.11.3.1.(13) Deck separated by barrier from spectator area &#145; &#145;
3.11.3.1.(14) Deck delineated from surrounding area &#145; &#145;
3.11.3.1.(15)mw Perimeter drainage around deck where necessary &#145; &#145;
3.11.3.1.(16)w Hose bibs provided for convenient flushing of deck &#145; &#145;
3.11.3.1.(17) Foot sprays running freely to waste provided where access to pool is over noncleanable
surfaces (e.g. Gravel, grass) &#145; &#145;
3.11.3.1.(18) One or more ladders or steps in deep and shallow areas &#145; &#145;
3.11.3.1.(19)mw Submerged surfaces of pool, the deck and partitions or walls adjacent to the
deck have cleanable surfaces &#145; &#145;
3.11.3.1.(20)mw Submerged surfaces white or light in colour (markings excluded) &#145; &#145;
3.11.3.1.(21)w Black disc 150 mm (5f") in diameter on white background at deepest point in
pool &#145; &#145;
DECK AND POOL REQUIREMENTS
OBC
Reference Requirements Design As Built
Pool-4
3.11.3.1.(22)mw Access to deck preventable (e.g. lockable doors, security fence with lockable
gate) &#145; &#145;
3.11.3.1.(23) Lifeguard control stations where required in a Class A pool
(a) one or more where water surface > 150 m2 (1610 ft2) and # 230 m2
(2480 ft2)
(b) two or more where water surface > 230 m2 (2480 ft2)
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&#145;
&#145;
&#145;
3.11.3.1.(24)w Markings on deck $ 100 mm (4") high, showing
(a) water depths at deep points, breaks between gentle and steep bottom slopes
and shallow points
(b) SHALLOW AREA at appropriate location(s)
(c) DEEP AREA at appropriate location(s) where water depth > 2.5 m (8' 2")
&#145;&#145;&#145;
&#145;&#145;&#145;
3.11.3.1.(25)w In pools with max. water depth # 2.5 m (8' 2") notice posted in letters $ 150
mm (5f") either CAUTION - AVOID DEEP DIVES or SHALLOW WATER
- NO DIVING (pool owner may choose either wording) &#145; &#145;
ABOVE GROUND POOLS
OBC
Reference Requirements Design As Built
3.11.3.1.(11)mw If pool installed on surface of ground or hard surface
Water depth constant and no more than 1.10 m (3' 7")
Water surface area no more than 100 m2 (1080 ft2)
Deck may be elevated platform that has:
(a) an unobstructed width of 900 mm (2' 11") minimum
(b) elevation above grade or floor $ 75 mm (3")
(c) 6 mm wide openings for drainage (¼")
(d) surface that is capable of being kept clean, disinfected and free from
slipperiness
&#145;&#145;&#145;
&#145;
&#145;&#145;&#145;
&#145;
Pool-5
DRESSING AND LOCKER ROOMS, SHOWERS AND TOILETS
OBC
Reference Requirements Design As
Built
3.11.9.1.(2) Class A pool on recreational camp exempt from dressing room, washroom, etc.
requirements if facilities available elsewhere on premises and foot sprays provided &#145; &#145;
3.11.9.1.(3) Class B pool exempt from dressing room, washroom, etc. requirements if facilities
available elsewhere on premises and foot sprays provided &#145; &#145;
3.1.16.3.(1) Public pools other than wave action pools:
Occupant load = D/2.5 + S/1.4 = ____ + ____ = ____ bathers
where D = water surface area in m² where the water depth is > 1.35 m (4' 5")
deep, and
S = water surface area in m² where the water depth is # 1.35 m (4' 5")
deep
&#145; &#145;
3.1.16.3.(2) Wave action pools:
Occupant load = D/2.5 + S/1.1 = ____ + ____ = ____ bathers
where D = water surface area in m² of the part of the pool where the still water
depth is > 1.00 m (3' 3"), and
S = water surface area in m² of the part of the pool where the still water
depth is # 1.00 m (3' 3")
&#145; &#145;
3.11.9.1.(4) The number of water closets, urinals and lavatories is determined from Article
3.7.4.3. and Table 3.7.4.3.C.
Male Provided Required Female Provided Required
W.C. _______ _______ W.C. _______ _______
Urinals _______ _______
Lav. _______ _______ Lav. _______ _______
Drinking Fountain _________
(NOTE: Barrier-free design may be required)
&#145;&#145;&#145;
&#145;
&#145;&#145;&#145;
&#145;
3.11.9.1.(5) One shower head provided for every forty bathers
Number of shower head required = _______ bathers ÷ 40 = ______ &#145; &#145;
3.11.9.1.(6) Layout such that bathers leaving changing and toilet areas (where provided) pass
through showers en route to pool &#145; &#145;
3.11.9.1.(7) Potable water pressure at shower heads$ 140 kPa (20.3 psi) &#145; &#145;
3.11.9.1.(8) Water tempering device(s) provided for showers arroba # 40/C &#145; &#145;
3.11.9.1.(9) Washroom, shower & passageway floors slope to drains at $ 1%
and are of hard-surfaced material with non-slip surface
&#145;&#145;
&#145;&#145;
3.11.9.1.(10) Wall bases coved in dressing and locker rooms, washrooms, shower areas and
passageways &#145; &#145;
3.11.9.1.(11) Hose connections provided in safe locations for flushing down washrooms, shower
areas and passageways &#145; &#145;
3.11.9.1.(12) Partitions or walls provided for privacy of dressing rooms, washrooms and shower
areas &#145; &#145;
3.11.9.1.(13) Bottom of interior partitions in dressing rooms or washrooms from 250 mm (9f")
to 350 mm (13¾") above floor &#145; &#145;
3.11.9.1.(14) Dressing and locker room floors of non-slip, easily cleanable surfaces &#145; &#145;
Pool-6
RECIRCULATION SYSTEMS
OBC
Reference Requirements Design As Built
3.11.8.1.(3) Means provided to prevent water from flowing from
(a) the pool or recirculation system into the water supply
(b) the sewer back into the pool
&#145;&#145;
&#145;&#145;
3.11.8.1.(5) Recirculating system capable of filtering, disinfecting, and passing through the
pool each day a volume of at least
(a) Class A pool - 6 times the pool’s water volume (4 hrs)
(b) Class B pool - 4 times the pool’s water volume (6 hrs)
(c) Modified pool - 3 times the pool’s water volume (8 hrs)
(d) Wave action pool - 6 times the pool’s water volume (4 hrs)
Pool dimensions (m) = ______________ Pump model ____________________
Surface area (m²) = ________________ Pump size (hp) __________________
Water volume (m³) = _______________ # turnovers / day ________________
Filter model _______________________ Filter and pump sizes adequate?
Filter flow rate (US gpm) = __________ yes &#145; no &#145;
&#145;&#145;&#145;&#145;
&#145;&#145;&#145;&#145;
3.11.8.1.(6) Flow meter on recirculation system (make _____________ model ____________) &#145; &#145;
3.11.8.1.(7) Automatic make-up devices and water meters on makeup water supply which is
connected to the recirculation system or the pool &#145; &#145;
3.11.8.1.(8) Continuous disinfection of pool water by means of either (a) or (b)
(a) chlorination or hypo-chlorination system capable of providing
(i) outdoor pool - 300 g chlorine/day/10,000 L of pool volume
(ii) indoor pool - 200 g chlorine/day/10,000 L of pool volume
(iii) outdoor wave action pool - 1 200 g chlorine/day/10,000 L of pool volume
(iv) indoor wave action pool - 800 g chlorine/day/10,000 L of pool volume
(b) a brominator capable of maintaining 3 mg of bromine/L of pool water
&#145;&#145;&#145;&#145;&#145; &#145;&#145;&#145;&#145;&#145;
3.11.8.1.(9) Gas chlorine system incorporates automatic termination of chlorine feed when
pool water recirculation is interrupted &#145; &#145;
3.11.8.1.(10)
3.11.8.1.(11)
Exposed potable water and chlorine piping within water treatment service room
colour-coded - green for potable water and yellow for chlorine &#145; &#145;
3.11.8.1.(12)
3.11.8.1.(13)
Where applicable, inlets and skimmers or overflow gutters provide uniform
circulation and distribution and capable of discharging surface water to waste -
15% removal/day
&#145; &#145;
3.11.8.1.(14) Except fittings within 300 mm of surface and returning water to the pool tank, all
fittings must provide 7 mm max. opening in one direction and grille covers
fastened by corrosion resistant, galvanically compatible materials require a tool
for removal
&#145; &#145;
3.11.8.1.(15)
3.11.8.1.(16)
Except for modified pools, public pools must be
(a) provided with a minimum of two suction or gravity outlets interconnected to
a full size manifold, and spaced at least 1 200 mm (3' 11") apart, and
(b) capable of emptying all the pool water through the drains in # 12 hrs
&#145;&#145;
&#145;&#145;
3.11.8.1.(17) Except for modified pools, flow Velocity# 0.45 m/s (1.48 ft/s) through openings
in suction or gravity cover fittings
Drains - Type/Model____________ Opening-m²__________Flow V. m/s_______
Others - Type/Model____________ Opening-m²__________Flow V. m/s_______
Others - Type/Model____________ Opening-m²__________Flow V. m/s_______
&#145; &#145;
3.11.8.1.(18) Marking of all suction and gravity fittings with 50 mm (2") wide contrasting band &#145; &#145;
3.11.8.1.(19) Fitting openings returning water to the pool tank that are located within 300 mm
(11¾”) of the water surface must be # 25 mm (1") dia. with one dimension
permitted to be more than 7 mm (9/32") &#145; &#145;
3.11.8.1.(20) Submerged skimmer equalizers and vacuum fittings are not designed and specified &#145; &#145;
Pool-7
EMERGENCY PROVISIONS
OBC
Reference Requirements Design As Built
3.11.10.1.(1) Illumination - refer to Subsection 3.2.7. &#145; &#145;
3.11.10.1.(2) Dressing, locker and shower rooms, washrooms and passageways - illumination
of $ 200 lx (18.6 ft-candles) at floor level &#145; &#145;
3.11.10.1.(3) Indoor pool or outdoor pool open after sundown equipped with lighting
(a) that will maintain on deck and water surface
(i) indoor pool $ 200 lx (18.6 ft-candles)
(ii) outdoor pool $ 100 lx (9.3 ft-candles)
(b) that makes underwater areas of pool visible
&#145;&#145;&#145;
&#145;&#145;&#145;
3.11.10.1.(4) Indoor pool and outdoor pool open after sundown equipped with emergency
lighting system that operates automatically &#145; &#145;
3.11.10.1.(5) Emergency lighting illuminates deck, washroom, shower, locker, water surface
areas and means of egress to $ 10 lx (0.9 ft-candles) &#145; &#145;
3.11.10.1.(6) Emergency power supply provided as per 3.2.7 &#145; &#145;
3.11.10.1.(7) Class A pool - emergency telephone adjacent to deck &#145; &#145;
3.11.10.1.(8) Class B pool - telephone for emergency use within 30 m (98' 5") of pool &#145; &#145;
3.11.10.1.(12)
3.11.10.1.(13)
3.11.10.1.(14)
An emergency stop button clearly labeled (with an audible & visual signal when
in use) to deactivated all recirculating pumps and located beside the phone of a
Class A pool and a Class B pool on the deck area &#145; &#145;
SERVICE ROOMS AND STORAGE
OBC
Reference Requirements Design As Built
3.11.11.1.(2) Compressed chlorine gas feeders located in a service room
(a) separated from building by a 1 hr fire separation and is gas tight
(b) designed with anchors for each cylinder and for no other purpose than
containing feeders and cylinder storage
(c) located above ground level
(d) exit door provided to outdoors
(e) screened openings to outdoors within 150 mm (5f") of floor and within 150
mm (5f") from ceiling each opening $ 2% of floor area
(f) emergency mechanical ventilation of $ 30 ACH capacity
suction # 900 mm & discharge $ 2.50 m above floor to outdoors
(g) equipped with a weigh scale for each cylinder in use $ 135 kg (300 lb)
&#145;
&#145;&#145;&#145;
&#145;
&#145;&#145;
&#145;
&#145;&#145;&#145;
&#145;
&#145;&#145;
3.11.11.1.(3)
3.11.11.1.(4)
3.11.11.1.(5)
Chemical storage rooms equipped with - hose connection and floor drain
ventilation
Service rooms and storage areas etc. equipped with secure locking devices
&#145;&#145;
&#145;
&#145;&#145;
&#145;
Pool-8
DIVING BOARDS & PLATFORMS*
OBC
Reference Requirements Design As Built
3.11.4.1.(2) Pool is not a modified pool or a wave action pool &#145; &#145;
3.11.4.1.(3) Board or platform has non-slip surface &#145; &#145;
3.11.4.1.(4) Board or platform more than 600 mm (23e") above water surface equipped with
handrail(s) &#145; &#145;
3.11.4.1.(6) Water depth within 3.00 m (9' 10") radius from end of board or platform is
(a) 2.75 m (9' 0") for board # 600 mm (23e") above water surface
(b) 3.00 m (9' 10") for board or platform > 600 mm (23e") and # 1.00 m (3'
3") above water
(c) 3.65 m (12' 0") for board or platform > 1 m (3' 3") and # 3 m (9' 10")
above water
&#145;
&#145;
&#145;
&#145;
&#145;
&#145;
3.11.4.1.(7) Water depth at 9.00 m (29' 6") radius from end of board or platform $ 1.35 m
(4' 5") &#145; &#145;
3.11.4.1.(8) Class B pool with board 600 mm (23e") or less above water,
depth at 7.50 m (24' 7") radius from end of board $ 1.35 m (4' 5")
+ warning notice - “Danger - Avoid deep long dives” arroba 150 mm (5f”) &#145; &#145;
3.11.4.1.(9) Slope changes no more than 17% where the water depth is less than that specified
in Sentence (6) and greater than 1.35 m (4' 5") &#145; &#145;
3.11.4.1.(10) Horizontal distance between boards or platforms $ 2.75 m (9' 0") &#145; &#145;
3.11.4.1.(11) Horizontal distance between a pool slide wall and ledge and
(a) a board or platform 1 m (3' 3") or less above water $ 3.00 m (9' 10")
(b) a board or platform more than 1 m (3' 3") above water $ 3.60 m (11' 10")
&#145;&#145;
&#145;&#145;
3.11.4.1.(12) Board or platform # 600 mm (23e") above water to project $ 900 mm (2' 11")
over the water &#145; &#145;
3.11.4.1.(13) Board > 600 mm (23e") above water to project $ 1.50 m (4' 11") over the
water &#145; &#145;
3.11.4.1.(14) Platform > 600 mm (23e") above water to project $ 1.20 m (3' 11") over the
water &#145; &#145;
3.11.4.1.(15) Diving headroom unobstructed - for dimensions, see Sentence 3.11.4.1.(15) &#145; &#145;
3.11.4.1.(16) Board or platform > 3.00 m (9' 10") above water surface - access preventable by
gate, barrier or other means &#145; &#145;
3.11.4.1.(17) Board or platform > 3.00 m (9' 10") above water surface - see FINA standards
for water depths and overhead clearances required &#145; &#145;
* Not permitted in modified pools and wave-action pools.
Pool-9
REQUIREMENTS FOR MODIFIED POOLS
OBC
Reference Requirements Design As Built
3.11.6.1.(3) Pool and pool deck hard-surfaced, cleanable &#145; &#145;
3.11.6.1.(4) Bottom slope # 8% &#145; &#145;
3.11.6.1.(5) Depth # 1.80 m (5' 11") &#145; &#145;
3.11.6.1.(6) Pool surrounded on all sides by a hard-surfaced deck
(a) $ 3.00 m (9' 10") wide
(b) 100 mm (4") high crown above pool water surface
(c) sloped to allow drainage away from the pool
&#145;&#145;&#145;
&#145;&#145;&#145;
3.11.6.1.(7) Two or more drain fittings located so that entire pool can be drained, and
protective grilles having openings at least 10 times the internal cross sectional
area of the outlet pipe(s) connected to recirculation system &#145; &#145;
3.11.6.1.(8) Lifeguard control stations adjacent to edge of water at intervals of # 60 m (197') &#145; &#145;
3.11.6.1.(9) Continuous black contour lines
(a) 150 mm (5f") wide at 600 mm (23e") depth
(b) 300 mm (11¾") wide at 1 200 mm (3' 11") depth
&#145;&#145;
&#145;&#145;
REQUIREMENTS FOR WAVE ACTION POOLS
OBC
Reference Requirements Design As Built
3.11.7.1.(3) Bottom slope
(a) # 8 per cent in still water depth < 1.00 m (3' 3")
(b) # 11 per cent in still water depth $ 1.00 m (3' 3")
&#145;&#145;
&#145;&#145;
3.11.7.1.(4) Walls vertical from surface of water to within 150 mm (5f") of bottom &#145; &#145;
3.11.7.1.(5) Hard-surfaced deck $ 3.00 m (9' 10") wide adjacent to shallow end
Hard-surfaced deck $ 1.50 m (4' 11") wide elsewhere &#145; &#145;
3.11.7.1.(6) Two or more lifeguard control stations on each side of pool where still water
depth > 1.00 m (3' 3") &#145; &#145;
3.11.7.1.(7) Recessed steps or ladders at intervals # 7.50 m (24' 7") along portions of pool
deeper than 1.00 m (3' 3") but not closer than 3.00 m (9' 10") to corners &#145; &#145;
3.11.7.1.(8) Barrier or wall adjacent to pool wall where depth is # 2.30 m (7' 7") that is #
1.00 m (3' 3") from the side of the pool and 1.00 m (3' 3") in height bearing
notices at intervals # 7.50 m (24' 7") stating that jumping and diving are
prohibited in that area &#145; &#145;
3.11.7.1.(9) Skimming devices provided and appropriately located &#145; &#145;
3.11.7.1.(10) Deactivation system with push buttons on pool decks # 30.0 m (98' 5") apart on
each side and deep end &#145; &#145;
3.11.7.1.(11) First-aid room located within 50 m (164') from pool &#145; &#145;
3.11.10.1.(9) Public address system audible in all portions of pool &#145; &#145;
3.11.10.1.(10) Communication system that interconnects supervisors, lifeguard control stations,
first-aid room and admission control centre &#145; &#145;
3.11.10.1.(11) Public address and communication systems interconnected &#145; &#145;
Pool-10
RAMPS INTO PUBLIC POOLS IN GROUP B, DIVISION 2 OR 3 OCCUPANCIES
OBC
Reference Requirements Design As Built
3.11.5.1.(3) Water depth < 1.5 m (4' 11"), surface area < 100 m² (1080 ft2)
(a) handrail running parallel to slope at a height of between 800 mm (2' 7") and
900 mm (2' 11") on each side of ramp
(b) width $ 1.10 m (3' 7")
(c) curb or other means to prevent wheel chair from falling off ramp
(d) surface finishes capable of being maintained clean and sanitary and free from
slipperiness
(e) a bottom landing $ 1.5 m (4' 11") long
&#145;&#145;&#145;
&#145;&#145;
&#145;&#145;&#145;
&#145;&#145;
3.11.5.1.(4) A notice reading CAUTION - NO DIVING in letters $ 150 mm (5f") high posted
on each wall or fence &#145; &#145;
3.11.5.1.(5)
3.11.5.1.(6)
Curb around perimeter of pool that has
(a) a height of 50 mm (2")
(b) rounded edges
(c) a coved base
(d) a raised nosing at the top
&#145;&#145;&#145;&#145;
&#145;&#145;&#145;&#145; 3.11.5.1.(7) If the ramp is a
dry ramp
(a) landing at bottom of ramp between 450 mm (17¾") and 550 mm (21e")
below top of pool wall
(b) landing has a floor drain at the lowest point
(c) top of wall between pool and ramp $ 250 mm (9f") and # 300 mm (11¾")
wide
(e) water depth marked in letters 100 mm (4") high, on the top of the wall
separating the pool from the ramp
(f) ramp slope # 8 per cent
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&#145;&#145;
&#145;&#145;
&#145;
&#145;&#145;
3.11.5.1.(8) If the ramp is a submerged ramp, the pool shall be so constructed that
(a) at bottom of ramp, water depth $ 600 mm (23e") and # 900 mm (2' 11")
(b) a hard-surfaced area $ 750 mm (2' 6") wide is provided contiguous to any part
of the ramp that pierces the deck
(c) provision for movable barrier that separates (b) from deck
(d) submerged portions of ramp and curb finished in shades that differentiate from
each other & from the pool walls and bottom
(e) ramp slope # 11 per cent
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&#145;&#145;
&#145;&#145;
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roberto sanchez,RCDD

Facilius Per. Partes in cognitionem totius adducimur. Seneca -Es mas fácil entender por partes que entenderlo todo-


 
 


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